Introduce NL80211_EXT_FEATURE_RADAR_OFFCHAN feature flag in order to
notify userland the underlay hw supports offchannel radar/CAC detection.
Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
---
include/uapi/linux/nl80211.h | 4 ++++
net/wireless/mlme.c | 4 ++++
2 files changed, 8 insertions(+)
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 87ece3e68b8b..3e734826792f 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -6060,6 +6060,9 @@ enum nl80211_feature_flags {
* frames. Userspace has to share FILS AAD details to the driver by using
* @NL80211_CMD_SET_FILS_AAD.
*
+ * @NL80211_EXT_FEATURE_RADAR_OFFCHAN: Device supports offchannel radar/CAC
+ * detection.
+ *
* @NUM_NL80211_EXT_FEATURES: number of extended features.
* @MAX_NL80211_EXT_FEATURES: highest extended feature index.
*/
@@ -6126,6 +6129,7 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_PROT_RANGE_NEGO_AND_MEASURE,
NL80211_EXT_FEATURE_BSS_COLOR,
NL80211_EXT_FEATURE_FILS_CRYPTO_OFFLOAD,
+ NL80211_EXT_FEATURE_RADAR_OFFCHAN,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 532df85d1c26..247ee0a01e8b 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -1040,6 +1040,10 @@ cfg80211_start_offchan_radar_detection(struct cfg80211_registered_device *rdev,
unsigned int cac_time_ms;
int err = -EBUSY;
+ if (!wiphy_ext_feature_isset(&rdev->wiphy,
+ NL80211_EXT_FEATURE_RADAR_OFFCHAN))
+ return -EOPNOTSUPP;
+
mutex_lock(&rdev->offchan_mutex);
if (rdev->offchan_radar_wdev)
goto out;
--
2.31.1
